Art of cooking.



TRESCOTT. ART or COOKING.'

APPLICATION FILED MAY 7. -1 9 l 5 Patented July 25, 1916.

UMTED STATES EPA orricir.A

CHARLES B. TRESCOTT, 0F CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, T AUTOMATIC' OVEN COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

To all whom 'it may concer/n:

Be it known that I, CHARLES B. Tnrisco'r'r, 'a citizen of the United States, residing l at Chicago, in the county of 'Cook andQ.,fState of Illinois, have invented 'a new and useful' Improvement in the Art of Cooking, of which the following is a specification. g A

My invention relates, more particularly stated, to an improvement 1n the art of low-l meats the maximum is about 180 F., and for4 cooking vegetables the maxim'umis about l 200 F.- The-advantage of this method'of low-temperature cooking lies, as to meats, in

its effect of gradually breaking down the fibrous matter and preventing ltoughening and hardening of the albumen, also retaining the naturalflavor; and with regard to vegetables the advantage Vlies in retaining their natural flavor. Thereis, however, adisadvantage in the common practice of low-temperature cooking, namely, 'that of lack of sufficient heat-units and moisture to thoroughly cook-meatsand prevent their shrinking and drying through evaporation and natural flavor. This -I accomplish, generallyl stated, by spraying into the heated atmos`-, l phere of a low-temperature oven,wateriin a 4vertical sectional view,

that of very imperfectly cooking vegetables.

The object of my invention is to overcome mellow condition uniformly throughout un- .cooked thoroughly and properly without shrinking while retaining their juices and flavor, and to enable vegetables to becookedV properly without .depriving them of their very finely-dividedcondition, and 1n "quan' tity suiicient to -saturate .theheated air,

thereby providing a -superfluity o f the water I.

. tremely tender; and thatwlthregard to vlege-v ing'in the oven in a loosely-'covered containenfj and gradually effectingl thecookingthereof with the advantages above mentioned.

The accompanying drawing shows, `by a an oven yequipped with a water-spraying nozzle and -suitable for the practice of my invention.

' The oven shown comprises a vsheet-iron chamber 1 surrounded by a sheet-iron jacket' 2 supported on legs 3 and forming a space et about the chamber for the heat from a suitable heater 5, shown as a gas-burner.

` Anfr or COOKING.

hingedlid 6. is provided for closing the oven at' its top', while in use, and a thermometer/7 1s shown on the top of the oven. A waterspraying nozzle 8 extends through the oventop and is connected by a hose 9 with asui'table water-supply under pressure (not shown). l i

, With the oven heated to the low temperaeso-v ture hereinbefore referred to, and the meat, vegetables, 'or the like, to be cooked therein g55 in a loosely-covered container 10, or other covered vessel, the water' supply isy turnedon'v to.'s'pray water in a `finely-divided condition into the 4upper partof the oven. Thisy fine spray ismaintained c ontinuously through-y youtthe cooking operationand is sufciently -coplous to saturate `the hotair, itself forming a vehicle for the heat-units, with which it becomes charged in .dropping through the rising hot air, whereby indropping vand enveloping the container it carries the heat thereto.l atl l".

'-luity of water in a finely-divided condition by saturating therewith hot air, lies 1n af,- fording an augmented vehicle for carrying the heat-units to th material undergoing cooking, whereby the latter is cooked to a der the comparatively low temper-ature,'and

It. is-my experience'that meat, cookediin accordance.I with lmy improved process, re-

Atains'its fullweight '(.lessfthe juices which' exudef into the pan andare saved), lsince there is nozevaporation therefrom; and obviously no -evaP-Iaton. can ytake place into the saturated atmosphere 1n' the oven; that it is thoroughly cooked throughout4 and extables, they are thoroughly cooked and-retain in cooking their naturalljiavor.

This process is tobe distinguished from -one employing' steam 'sprayed intottheoven during cooking, since where 4s'teamli's so used lhot air in the oven, s1'ce' where the supply The importance of providing'the super- Anoutlet for the water is shown of steam is sufficiently coplous to'moisten' thel air, it overheats the oven, and if the'quantity is made insuicient to so overheat the oven it Will fail to saturate the air. It is further to be observed that inv the' present case the heat supply and moisture supply are separate and under separatecontrol (a valve being shown at 1l for-,controlling the supply of water to be sprayed and a valve being shown at l2 for controlling the t heat supply) Whereas, in the use of steam, for providing moisture in the oven,it is not only ineffective for that purpose `but it also tends to overheat the air inthe oven, and to defeat the Very object of low-temperature cooking.

Vhat I claim as new and desire to secure by Letters Patent isf 1. In the art of low-temperature cooking, the process which consists in an oven, in 'which the cooking is carried on, to and maintaining it at a temperaturel 'below 212 F., spraying into the heated atmosphere Water insufficient quantity to saturate the hot air, and maintaining a continuous supply of the throughout the cooking operation.

2. In the art of low-temperature cooking,

in heating the air sprayed Water -the process which consists in heating the air 1n an oven, in Which the cooking-.is carried on, to and maintaining it at a temperature vbelow 2120 F.,'spraying into the top portion .the process which consists in introducing into an oven vthe matter to be cooked in a loosely-covered container, heating the air in the oven Ato andmaintaining it at a temperature below 212" F., spraying'into the top portion of the oven, water to drop through the heated atmosphere there-in and in sulii cient quantity to saturate said air; and maintaining a continuous supply of the sprayed water throughout the cooking operation.

u CHAR-LES( B. TRESCOTT.

In the presence of- A. C. FISCHER,

D. C.` 'I`HoRsn1\I`..l 

